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Parameters of HCSs before and after carbonization: Size and density.
| Name | Carbonization Times | Particles | HCSs Weight (g) | EPS Weight (g) | Outer Diameter (mm) | Shell Thickness (mm) | HCS Density (g/cm3) |
|---|---|---|---|---|---|---|---|
| / | 0 | 50 | 1.2988 | 0.0011 | 6.30 ± 1.15 | 0.15 ± 0.01 | 0.198 |
| HCS-I | 1 | 50 | 1.0403 | 0.0006 | 6.30 ± 1.15 | 0.15 ± 0.01 | 0.159 |
| HCS-II | 4 | 50 | 1.6532 | 0.0006 | 6.36 ± 1.15 | 0.18 ± 0.02 | 0.245 |
